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9222528bdd
* fix(opencode): session stability, free-tier routing, and CLI defaults - Wire generateSessionId() into opencodeHeaders so x-opencode-session is a deterministic fingerprint instead of randomUUID() per request, enabling upstream prompt caching across a conversation - Thread request body through buildHeaders() so session fingerprint has access to model, system, messages, and tools - Default CLI header synthesis to ON (opt-out via false), align values with 9router proven defaults (opencode/desktop/global) - Auto-echo listing-valid model names for noAuth providers so response.model matches /v1/models listing - Short-circuit free-tier model resolution to opencode provider first to prevent prefix inference misrouting when catalog is unreachable * fix(opencode): make free-tier default flip self-consistent + add coverage PR #10571 flipped OPENCODE_SYNTHESIZE_CLI_HEADERS to on-by-default and changed the synthesized UA/client/project default values, but shipped with 2 broken assertions in the existing #5997 regression test and no coverage for the new session-fingerprinting, free-tier routing, or noAuth echoModel logic (Hard Rule #18). - Update tests/unit/opencode-cli-headers-synthesis-5997.test.ts to match the new on-by-default behavior and new default values; add an explicit opt-out coverage test so the forward-only path is still guarded. - Fix 20 further test failures in tests/unit/opencode-executor.test.ts and tests/unit/refactor-buildHeaders-opencode.test.ts caused by the same default flip (pin OPENCODE_SYNTHESIZE_CLI_HEADERS=false for the characterization suites that predate #10571; use a genuinely CLI-looking UA where the preserved-UA test requires one). - Fix a real bug found via TDD while adding the mandated free-tier routing regression test: the big-pickle/*-free short-circuit in open-sse/services/model.ts checked activeProviders?.has("opencode") literally, but getActiveProviderSet() canonicalizes every connection's provider id through resolveProviderAlias(), which rewrites "opencode" to "opencode-zen" via a manual override — so an active no-auth opencode connection could never satisfy the check. Now checks both opencode-family candidate ids. Proven with a test that fails on the original code and passes with the fix (both connections active with a stale synced catalog omitting big-pickle). - Extract the noAuth-provider echoModel aliasing in chatCore.ts into a pure, directly-testable helper (open-sse/handlers/chatCore/noAuthEchoModel.ts), matching the existing chatCore god-file decomposition pattern. - Add regression tests for generateSessionId()-based x-opencode-session fingerprinting (stable within a conversation, changes on model/message changes), the free-tier routing short-circuit, and the noAuth echoModel aliasing. - Add the changelog.d/ fragment and sync docs/reference/ENVIRONMENT.md's OPENCODE_SYNTHESIZE_CLI_HEADERS/OPENCODE_USER_AGENT/OPENCODE_CLIENT/ OPENCODE_PROJECT rows to the new defaults. Does NOT resolve whether flipping OPENCODE_SYNTHESIZE_CLI_HEADERS's default was the right call, and does NOT touch the separate open PR #10357 which flips the same flag with a different literal default value - that decision is left to the maintainer at merge time. Co-authored-by: diegosouzapw <8016841+diegosouzapw@users.noreply.github.com> --------- Co-authored-by: diegosouzapw <8016841+diegosouzapw@users.noreply.github.com>